were obtained for a 1,400 ^^^ °'2>4Q0 * "^^^ fitted values with these 

 functions are shovn in boxes (table 1) above the value computed from cor- 

 resrondinG expansions. 



By substituting the accepted values in equation (h) , an empirical 

 model for CHARLIE-ECHO conditions is obtained. 



^400 = ^s-, a -7.44 cos <^ + A6' 2.44 sin c^ cos ( cut + 2.1 (^ sin <^) + 



^^-4.78s,n</>pog [2ojt + 44l sin (<^ - 35.5 )] 



(9) 



Equation (9) was limited to two harmonics, because constants 03 , 

 04 ) ^s J and h^ were quite small and the corresponding harmonics 

 could be neglected. 



The second data area includes BRAVO, DELTA, and HOTEL. The accepted 

 parameters are based mainly on DELTA and HOTEL. Parameters for BRAVO, 

 though quite consistent in most cases, have been used only for reference 

 and comparison, because BRAVO data extend over a period of only 5 years, 

 and because the station borders on CHARLIE-ECHO type of conditions. A 

 summary of factors for the DELTA-HOTEL area is shown in table 2<, 



TABLE 2 



MEAN TEMPERATURE DISTRIBUTION FACTORS AT ij-OO FEET FOR OWS DELTA-HOTEL 



Factor 



DELTA 



HOTEL 



Accepted Factor 



BRAVO 



X = 



S, = 



$2 = 



cos <^ 



sin cf) 



sin (p 



°'l,400 



°-2,400 



-5.16 



-1.71 



-2.82 



lo6o3 



109.8^ 



324.0° 



.5.66 



-1.' 



4.00 



-5.51 



S, = -1.6k 



S2 = -4.00 



90.0 

 90:^^ 



166.0° 



153 sin 



166.0° 



■5.35 



-1.98 



-4. 



127.0 



117.7 

 131.0'^ 



XT 



Accepted factors X ana S| are mean values of DELTA anu nOxii'l.. S2 

 at DELTA is quite small and is probably unreliable, because cold and warm 

 water masses often interchange in this area in summer. This boundary ef- 

 fect produces an unrealistic ally large semiannual term. The BRAVO factor 



of 



tends to substantiate the HOTEL value; therefore the S2 value 



13 



